Failure Code [Ca115] Eng Ne And Bkup Speed Sensor Error - Komatsu PC130-8 Shop Manual

40 Troubleshooting

Failure code [CA115] Eng Ne and Bkup speed sensor error

User code Failure code
E10
Contents of
• Abnormality occurred in Ne speed sensor circuit and Bkup speed sensor circuit simultaneously.
trouble
Action of
• None in particular.
controller
Problem that
• Engine cannot be started (if engine has been stopped).
appears on
• Engine stops (if engine has been running).
machine
Related
information
Defective Ne speed sensor
1
system
Defective Bkup speed sen-
2
sor system
Possible causes Defective mount of Ne speed
3
and standard sensor
value in normal
Defective mount of Bkup
4
state
speed sensor
Defective connection (Wrong
5
connection)
6 Defective engine controller
PC130-8
Trouble
CA115
Causes
Eng Ne and Bkup speed sensor error
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
Carry out troubleshooting for failure code [CA689].
Carry out troubleshooting for failure code [CA778].
Check mount of Ne speed sensor directly for defect (defective
installation of sensor, indicator-ring of crankshaft, etc.)
Check mount of Bkup speed sensor directly for defect (defective
installation of sensor, indicator-ring of crankshaft, etc.)
Check Ne speed sensor and Bkup speed sensor directly for defec-
tive connection (wrong connection).
If causes 1 – 5 are not detected, engine controller may be defec-
tive. (Since trouble is in system, troubleshooting cannot be carried
out.)
SEN04119-01
1
19